Magnesium plays a crucial role in many different processes, including healthy nerve transmission, muscle function, and building strong bones and teeth. It may also help manage conditions such as depression, PMS, diabetes, hypertension, migraine and contribute to heart health. Dr Michael Eades says, &quot;If I had only one supplement that I could take, it would be magnesium.&quot; My own choice is for chelated magnesium, by Bluebonnet, as it is in a form that is more easily absorbed by the body.